Is CVE-2021-21403 in the CISA KEV catalog?

No. CVE-2021-21403 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-21403?

CVE-2021-21403 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-21403?

CVE-2021-21403 has an EPSS score of 1.36% (68th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-21403?

Upgrade kongchuanhujiao to 1.3.21 or later.

CVE & CISA-KEV Catalog

CVE-2021-21403

HIGH

7.5

CVSS v3

NVD

Description

In github.com/kongchuanhujiao/server before version 1.3.21 there is an authentication Bypass by Primary Weakness vulnerability. All users are impacted. This is fixed in version 1.3.21.

CWE-305 CWE-287Improper Authentication

How to fix

Remediation Available

kongchuanhujiaoNVD

Affected:< 1.3.21Fixed in:1.3.21CVE-2021-21403derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

1.36%probability of exploitation in 30 days

68thpercentile

Moderate risk: more likely to be exploited than 68% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.